Let’s get one thing clear: When we say fashion mistakes, we’re not talking about wearing an outfit that could land you on a worst-dressed list, if people were judging. Rather, we’re talking about long-held habits you refuse to break, fashion clichés you still believe are true, and small things you’re avoiding—or doing—that can wreak havoc on your personal style.

MORE: 12 Shopping Habits You Need to Break Now

From not getting things tailored enough (bad!), to buying into the idea that you have to throw certain things away before you turn 30 years old (stupid!), here are 40 fashion mistakes that you should start remedying right now.

You believe white shouldn’t be worn after labor day.

Ladies, listen up: This is an antiquated rule that shouldn’t be followed. As countless designers and fashion stars have proved during the past few seasons, white isn’t only appropriate when the weather turns chilly, but also amazingly fresh…